Solar Neutrinos

提案编号：0802114机构：VA Polytechnic institute & St U NSF项目：物理-核天体物理项目负责人：Vogelaar， Robert b .标题：太阳中微子摘要该奖项为弗吉尼亚理工大学小组继续参与意大利格兰萨索地下实验室的Borexino实验提供资金。对太阳中微子的实验首次提供了中微子质量和混合的证据。Borexino实验最近首次对7Be低能太阳中微子的通量进行了实时测量。结果与标准太阳模型和中微子振荡的预测一致。该小组计划解决校准系统的充分利用、参与数据采集和分析以及预期Borexino结果的影响等问题。随着更高的纯度和校准的实现，在Borexino测量CNO和pep太阳中微子通量的可能性现在是现实的。预计该计划对科学、技术和推广的更广泛影响包括部署和利用超净校准技术，并创造了首次直接测量太阳的可能性。与目前在光球层中看到的相比，延迟了大约5万年。外展对象是天体物理学家、宇宙学家、地球物理学家和地球化学家、化学家和化学工程师、弗吉尼亚州和邻近各州大学的教师和学生以及国际科学界。

PROPOSAL NUMBER: 0802114INSTITUTION: VA Polytechnic Inst & St U NSF PROGRAM: PHY - NUCLEAR ASTROPHYSICSPRINCIPAL INVESTIGATOR: Vogelaar, Robert B.TITLE: Solar Neutrinos ABSTRACTThis award provides funding for the Virginia Tech group to continue their participation in the Borexino experiment at the Gran Sasso underground lab in Italy. Experiments with solar neutrinos gave the first evidence for neutrino mass and mixing. The Borexino experiment has recently made the first real-time measurement of the flux of low energy solar neutrinos from 7Be. The result is consistent with predictions of Standard Solar Models and neutrino oscillations. The group plans to address the full utilization of the calibration system, participation in data acquisition and analysis, and the implications of anticipated Borexino results. With better purity and calibration now achieved, the potential for measuring the CNO and pep solar neutrino fluxes in Borexino is now realistic. The broader impact on science, technology and outreach that is expected from the program includes deployment and utilization of ultra-clean calibration techniques and creating the possibility that, for the first time, one might directly measure the Sun?s energy generation today, versus what is currently seen in the photosphere after a delay of about 50,000 years. The outreach is to astrophysicists, cosmologists, geophysicists and geochemists, chemists and chemical engineers, teachers and students in universities in Virginia and neighboring states and the international scientific community.